Effects of race, cigarette smoking, and use of contraceptive medications on resting energy expenditure in young women.
Am J Epidemiol
; 154(8): 718-24, 2001 Oct 15.
Article
em En
| MEDLINE
| ID: mdl-11590084
ABSTRACT
The prevalence of obesity is higher in Black women than in White women (JAMA 1994;272205-11; Arch Pediatr Adolesc Med 1995;1491085-91). Although it has been shown that Black women have a lower resting energy expenditure (REE), factors affecting REE remain unclear. This 1996-1997 study in Cincinnati, Ohio, assessed racial differences in REE and their determinants in a biracial cohort of 152 healthy young women aged 18-21 years. Two indirect calorimetric measurements were obtained during two overnight hospital admissions 10-14 days apart. Body composition was measured by using dual-energy x-ray absorptiometry. Mean REE (adjusted for body composition, smoking, and contraceptive medication use) was significantly (p = 0.04) lower by 71 kcal/day in Black women (1,453 (standard error, 21) kcal/day) than in White women (1,524 (standard error, 19) kcal/day). Smoking was associated with a REE that was 68 kcal/day higher for both groups (p = 0.03). A trend (p = 0.07) toward increased REE (by 46 kcal/day) was found with contraceptive medication use. In conclusion, young Black women had a significantly lower REE than did White women. Cigarette smoking significantly increased REE. The apparent presence of a more parsimonious energy metabolism in Black women suggests that maintenance of energy homeostasis requires particular vigilance in this high-risk population.
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Base de dados:
MEDLINE
Assunto principal:
Fumar
/
Anticoncepcionais Orais
/
Metabolismo Energético
Tipo de estudo:
Health_economic_evaluation
/
Risk_factors_studies
Limite:
Adolescent
/
Adult
/
Female
/
Humans
Idioma:
En
Ano de publicação:
2001
Tipo de documento:
Article